Revert "mg.c, Cwd.pm - Empty path is the same as "." which is forbidden under taint"

This reverts commit 5ede4453c4877110eb5214ff400c173210b101b1.

I messed up and pushed it to blead not to the PR branch I meant to push
it. Thanks to xenu for noticing. This needs a smoke before it should be
applied.

1 files changed, 1 insertions, 11 deletions

diff --git a/mg.c b/mg.c
index 831e25117f..7a4727cedf 100644
--- a/mg.c
+++ b/mg.c
@@ -1356,15 +1356,6 @@ Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
             const char path_sep = ':';
 #endif
 
-#ifndef __VMS
-            /* Does this apply for VMS?
-             * Empty PATH on linux is treated same as ".", which is forbidden
-             * under taint. So check if the PATH variable is empty. */
-            if (!len) {
-                MgTAINTEDDIR_on(mg);
-                return 0;
-            }
-#endif
             /* set MGf_TAINTEDDIR if any component of the new path is
              * relative or world-writeable */
             while (s < strend) {
@@ -1381,8 +1372,7 @@ Perl_magic_setenv(pTHX_ SV *sv, MAGIC *mg)
                       /* Using Unix separator, e.g. under bash, so act line Unix */
                       || (PL_perllib_sep == ':' && *tmpbuf != '/')
 #else
-                      || *tmpbuf != '/' /* no starting slash -- assume relative path */
-                      || s == strend    /* trailing empty component -- same as "." */
+                      || *tmpbuf != '/'       /* no starting slash -- assume relative path */
 #endif
                       || (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
                     MgTAINTEDDIR_on(mg);